Sensor transmitting terminal

Abstract

The utility model belongs to the field of sensor transmitting terminal manufacturing, and particularly relates to a sensor transmitting terminal which comprises a main shell, a convex lens, a reflective mirror, a concave lens and a light source body, the convex lens, the reflective mirror and the concave lens are arranged in the main shell, a small hole is formed in the side, opposite to the light source body, of the concave lens in the main shell, and the axis of the small hole coincides with the axis of the concave lens. Light rays emitted by the light source body penetrate through the geometric center and the focus of the concave lens, then can enter the reflective mirror through the small hole and can penetrate through the geometric center and the focus of the convex lens after being reflected by the reflective mirror, and protrusions are arranged on the side wall, parallel to the light emitting direction of the light source body, of a shell of the light source body. The main shell is provided with a sliding groove matched with the protrusion, and the length line of the sliding groove is parallel to light which can penetrate through the geometric center and the focus of the concave lens at the same time. The problem of how to adjust the distance between the light source body and the concave lens under the condition that the position of the light source in the radial direction of the concave lens is not changed is solved.

Description

A sensor transmitter Technical Field

[0001] This application belongs to the field of sensor transmitter manufacturing, specifically a sensor transmitter. Background Technology

[0002] The light emitted by the sensor's transmitter is parallel, so a convex lens is placed inside the transmitter to convert the emitted light into parallel light rays that exit from the sensor's transmitter. Therefore, during manufacturing, the light source inside the transmitter should be located at the focal point of the convex lens to ensure that the emitted light rays are diverged into parallel light. To ensure that the light source inside the transmitter is located at the focal point of the convex lens, the radial position of the focal point on the lens needs to be found. This position is usually found through dimensional measurement, which is relatively convenient and has a small impact. However, the axial position of the focal point on the convex lens has a greater impact and therefore requires continuous adjustment. The distance between the light source and the convex lens needs to be adjusted, and the radial position of the light source on the convex lens must not be changed during this adjustment process. Summary of the Invention

[0003] The purpose of this application is to address the shortcomings of existing technologies by designing a sensor transmitter by setting a groove on the main housing and a protrusion on the light source body. This design ensures that, during the adjustment of the distance between the light source body and the concave lens, the position of the light source body in the radial direction of the concave lens will not change due to the presence of the protrusion and the groove. This solves the problem of how to adjust the distance between the light source body and the concave lens without changing the position of the light source in the radial direction of the concave lens.

[0004] To achieve the above objectives, the technical solution adopted in this application is:

[0005] A sensor transmitter includes a main housing, a convex lens, a reflector, a concave lens, and a light source body. The convex lens, reflector, and concave lens are disposed inside the main housing. A small hole is provided inside the main housing on the side of the concave lens facing away from the light source body. The axis of the small hole coincides with the axis of the concave lens. Light emitted from the light source body passes through the geometric center and focal point of the concave lens, enters the reflector through the small hole, and then passes through the geometric center and focal point of the convex lens after being reflected by the reflector. A protrusion is provided on the side wall of the outer shell of the light source body parallel to the light emission direction of the light source body. A groove is provided on the main housing to cooperate with the protrusion. The length line of the groove is parallel to the light that can simultaneously pass through the geometric center and focal point of the concave lens.

[0006] Preferably, when the protrusion is inserted into the groove, the two side walls of the groove parallel to the length line of the groove slide into contact with the opposite two side walls of the protrusion.

[0007] Preferably, the cross-section of the groove is trapezoidal, and the cross-section of the protrusion is also trapezoidal.

[0008] Preferably, the side wall of the slide is provided with a first secondary groove, which is located between the bottom of the slide and the opening. The length line of the first secondary groove is parallel to the length line of the slide. The side wall of the outer shell is provided with a second secondary groove, which has an angle with the first secondary groove. The projection of the first secondary groove on the side wall of the slide intersects with the projection of the second secondary groove on the side wall of the slide.

[0009] Preferably, the included angle is an acute angle.

[0010] Preferably, the inner wall of the main housing is perpendicular to the reflector, where the groove is located.

[0011] Preferably, the reflector is perpendicular to the inner bottom surface of the main housing, the light emitted by the light source body is parallel to the inner bottom surface of the main housing, the angle between the light emitted by the light source body and the reflecting surface of the reflector is 54°, and the sliding groove is provided on the inner bottom surface of the main housing.

[0012] Preferably, the projection of the protrusion on the inner bottom surface of the main housing is S1, and the projection of the outer shell on the inner bottom surface of the main housing is S2. The connecting line segment on S1 between the two edges that are located on both sides of the length line of the outer shell and are farthest from the length line of the outer shell is greater than the connecting line segment on S2 between the two edges that are located on both sides of the length line of the outer shell and are farthest from the length line of the outer shell.

[0013] Compared with the prior art, this application has the following beneficial effects:

[0014] This application employs a method of setting a groove on the main housing and setting a protrusion on the light source body to design a sensor transmitter. This ensures that, during the process of adjusting the distance between the light source body and the concave lens, the position of the light source body in the radial direction of the concave lens will not change due to the presence of the protrusion and the groove. This solves the problem of how to adjust the distance between the light source body and the concave lens without changing the position of the light source in the radial direction of the concave lens. Attached Figure Description

[0015] Figure 1 is a schematic diagram of the structure of this application;

[0016] Figure 2 is an exploded view of this application;

[0017] Figure 3 is an enlarged view of point A in Figure 2;

[0018] Figure 4 is an enlarged view of point B in Figure 2;

[0019] Figure 5 is a partial schematic diagram of the positional relationship between the light source body and the main housing in this application;

[0020] Figure 6 is the optical path diagram in this application.

[0021] Among them, 1. main housing; 2. convex lens; 3. reflector; 4. concave lens; 5. light source body; 5-1. outer shell; 5-2. light-emitting diode; 6. protrusion; 7. groove; 8. first auxiliary groove; 9. second auxiliary groove. Detailed Implementation

[0022] As shown in Figures 1-6, a sensor transmitter includes a main housing 1, a convex lens 2, a reflector 3, a concave lens 4, and a light source body 5. The convex lens 2, reflector 3, and concave lens 4 are disposed inside the main housing 1. A small hole is provided on the side of the concave lens 4 facing away from the light source body 5 inside the main housing 1. The axis of the small hole coincides with the axis of the concave lens 4. The light emitted by the light source body 5 passes through the geometric center and focal point of the concave lens 4, and can enter the reflector 3 through the small hole. After being reflected by the reflector 3, it can pass through the geometric center and focal point of the convex lens 2. A protrusion 6 is provided on the side wall of the outer shell 5-1 of the light source body 5, which is parallel to the light emission direction of the light source body 5. A groove 7 is provided on the main housing 1 to cooperate with the protrusion 6. The length line of the groove 7 is parallel to the light that can pass through the geometric center and focal point of the concave lens 4 simultaneously.

[0023] After the light enters the concave lens 4, it is dispersed by the concave lens 4, so that only the light that has passed through the focal point of the concave lens 4 can be emitted from the side of the concave lens 4 towards the light source body 5 through the small hole and onto the reflector 3. In this way, the light on the reflector 3 is equivalent to a light spot. The intersection of the reflecting surface of the reflector 3 and the light emitted from the small hole is the focal point of the convex lens 2. Therefore, the light is dispersed into parallel light by the convex lens 2 and emitted outside the laser emitter, thus achieving the purpose of emitting parallel light.

[0024] Specifically, when the protrusion 6 is inserted into the groove 7, the two side walls of the groove 7 parallel to its length line slide in contact with the opposite side walls of the protrusion 6. This design ensures that the sliding contact between the two sides of the protrusion 6 and the two sides of the groove 7 prevents the light source body 5 from changing its position in the radial direction of the concave lens 4. In other words, the protrusion 6 can only move along the length of the groove 7, which is the axial direction of the concave lens 4.

[0025] Preferably, the cross-section of the groove 7 is trapezoidal, and the cross-section of the protrusion 6 is also trapezoidal. This configuration, as shown in Figures 2 and 3, restricts and positions the position of the light source body 5 in the radial direction of the concave lens 4.

[0026] Preferably, the side wall of the slide groove 7 is provided with a first secondary groove 8, which is located between the bottom and the opening of the slide groove 7. The length line of the first secondary groove 8 is parallel to the length line of the slide groove 7. The side wall of the outer shell 5-1 is provided with a second secondary groove 9, which forms an angle with the first secondary groove 8. The projection of the first secondary groove 8 on the side wall of the slide groove 7 intersects with the projection of the second secondary groove 9 on the side wall of the slide groove 7. With this arrangement, after the protrusion 6 is installed into the slide groove 7, glue can be dripped from the first secondary groove 8 and flow along the first secondary groove 8 into the second secondary groove 9, thereby adhering (fixing) the protrusion 6 to the slide groove 7, that is, fixing the axial position between the adjusted light source body 5 and the concave lens 4. Compared with not having the first secondary groove 8 and the second secondary groove 9, the glue can penetrate a larger area and the adhesion is more stable. The purpose of having the projection of the first secondary groove 8 on the side wall of the slide 7 intersect with the projection of the second secondary groove 9 on the side wall of the slide 7 is to allow the glue in the first secondary groove 8 to enter the second secondary groove 9.

[0027] Preferably, the included angle is an acute angle. This arrangement makes the length of the first secondary groove on the protrusion 6 longer, thereby making the adhesion more secure.

[0028] Preferably, the inner wall of the main housing 1 is perpendicular to the slide groove 7 and the reflector 3. This arrangement ensures that the light emitted from the main housing 1 is parallel to the inner wall of the main housing 1, thereby preventing the inner wall of the main housing 1 from blocking part of the light and allowing the light to be fully utilized.

[0029] Preferably, the reflector 3 is perpendicular to the inner bottom surface of the main housing 1, the light emitted by the light source body 5 is parallel to the inner bottom surface of the main housing 1, the angle between the light emitted by the light source body 5 and the reflecting surface of the reflector 3 is 54°, and the sliding groove 7 is provided on the inner bottom surface of the main housing 1. With this configuration, as shown in Figure 1, the main housing 1 is smaller in size, saving space.

[0030] Preferably, the projection of the protrusion 6 on the inner bottom surface of the main housing 1 is S1, and the projection of the outer shell 5-1 on the inner bottom surface of the main housing 1 is S2. The connecting line segment on S1 between the two edges furthest from the length line of the outer shell 5-1 on both sides is larger than the connecting line segment on S2 between the two edges furthest from the length line of the outer shell 5-1. This arrangement, as shown in Figure 1, facilitates the dripping of adhesive from the end of the first secondary groove 8 into the first secondary groove 8.

Claims

1. A sensor transmitter, characterized in that, The system includes a main housing (1), a convex lens (2), a reflector (3), a concave lens (4), and a light source body (5). The convex lens (2), the reflector (3), and the concave lens (4) are disposed inside the main housing (1). A small hole is provided on the side of the concave lens (4) facing away from the light source body (5) inside the main housing (1). The axis of the small hole coincides with the axis of the concave lens (4). The light emitted by the light source body (5) passes through the geometric center and focal point of the concave lens (4) and can enter the reflector (3) through the small hole. After being reflected by the reflector (3), it can pass through the geometric center and focal point of the convex lens (2). A protrusion (6) is provided on the side wall of the outer shell (5-1) of the light source body (5) parallel to the light emission direction of the light source body (5). A groove (7) is provided on the main housing (1) to cooperate with the protrusion (6). The length line of the groove (7) is parallel to the light that can pass through the geometric center and focal point of the concave lens (4) at the same time.

2. The sensor transmitter according to claim 1, characterized in that, When the protrusion (6) is inserted into the groove (7), the two side walls of the groove (7) parallel to the length line of the groove (7) slide in contact with the opposite side walls of the protrusion (6).

3. The sensor transmitter according to claim 1, characterized in that, The cross-section of the groove (7) is trapezoidal, and the cross-section of the protrusion (6) is also trapezoidal.

4. A sensor transmitter according to claim 1, characterized in that, The slide (7) has a first secondary groove (8) on its side wall. The first secondary groove (8) is located between the bottom of the slide (7) and the opening. The length line of the first secondary groove (8) is parallel to the length line of the slide (7). The outer shell (5-1) has a second secondary groove (9) on its side wall. The second secondary groove (9) and the first secondary groove (8) have an angle between them. The projection of the first secondary groove (8) on the side wall of the slide (7) intersects with the projection of the second secondary groove (9) on the side wall of the slide (7).

5. A sensor transmitter according to claim 4, characterized in that, The included angle is an acute angle.

6. A sensor transmitter according to claim 1, characterized in that, The inner wall of the main housing (1) is perpendicular to the inner wall of the slide (7) and the reflector (3).

7. A sensor transmitter according to claim 1, characterized in that, The reflector (3) is perpendicular to the inner bottom surface of the main housing (1), the light emitted by the light source body (5) is parallel to the inner bottom surface of the main housing (1), the angle between the light emitted by the light source body (5) and the reflective surface of the reflector (3) is 54°, and the slide groove (7) is provided on the inner bottom surface of the main housing (1).

8. A sensor transmitter according to claim 1, characterized in that, The projection of the protrusion (6) on the inner bottom surface of the main housing (1) is S1, and the projection of the outer shell (5-1) on the inner bottom surface of the main housing (1) is S2. The connecting line segment on S1 that is located on both sides of the length line of the outer shell (5-1) and is farthest from the length line of the outer shell (5-1) is greater than the connecting line segment on S2 that is located on both sides of the length line of the outer shell (5-1) and is farthest from the length line of the outer shell (5-1).

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